Nursing Elites

1. In the Gram Stain procedure, which component acts as the mordant?

• A. Crystal violet
• B. Methyl alcohol
• C. Iodine
• D. Safranin

Correct answer: C

Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.

2. What does preload refer to?

• A. The volume of blood entering the left side of the heart
• B. The volume of blood entering the right side of the heart
• C. The pressure in the venous system that the heart must overcome to pump the blood
• D. The pressure in the arterial system that the heart must overcome to pump the blood

Correct answer: B

Rationale: Preload refers to the volume of blood that enters the right side of the heart. This volume stretches the fibers in the heart before contraction. Preload is an essential factor in determining the force of ventricular contraction. Choices A, C, and D are incorrect. Choice A is incorrect because preload is specifically related to the volume of blood entering the right side of the heart. Choices C and D are incorrect as they refer to afterload, which is the pressure that the heart must overcome to pump blood out of the ventricles into the systemic or pulmonary circulation.

3. What is the flap of tissue that covers the trachea upon swallowing called?

• A. Epidermis
• B. Endocardium
• C. Epiglottis
• D. Epistaxis

Correct answer: C

Rationale: The correct answer is C: Epiglottis. The epiglottis is a flap of tissue that covers the trachea when swallowing to prevent food or liquid from entering the airway. Choice A, Epidermis, is the outer layer of the skin and is not related to the trachea. Choice B, Endocardium, is the inner lining of the heart chambers and is also unrelated to the trachea. Choice D, Epistaxis, refers to a nosebleed and is not the correct term for the tissue covering the trachea.

4. The nurse is examining a 2-year-old child and asks, "May I listen to your heart now?"? Which critique of the nurse's technique is most accurate?

• A. Asking questions may enhance the child's autonomy.
• B. Asking the child for permission helps develop a sense of trust.
• C. This question is an inappropriate statement because children at this age like to have choices.
• D. Children at this age like to say, "No."? The examiner should not offer a choice when no choice is available.

Correct answer: D

Rationale: Children at the age of 2 often like to assert their independence by saying "No."? In situations where there is actually no choice available, offering a false choice can lead to a lack of trust. It is important not to offer a choice when there isn't one, as doing so may undermine trust. While asking for permission can enhance autonomy and trust, offering a limited option like, "Shall I listen to your heart next or your tummy?"? may be a better approach. Therefore, the correct critique of the nurse's technique in this scenario is that children at this age tend to say "No,"? so the examiner should avoid offering a choice when there isn't a real alternative.

5. Which of the following puts the layers of skin in the correct order from right to left?

• A. Dermis, epidermis, hypodermis
• B. Hypodermis, epidermis, dermis
• C. Epidermis, dermis, hypodermis
• D. None of the above

Correct answer: C

Rationale: The correct order of the layers of skin from outermost to innermost is the epidermis, dermis, and then the hypodermis. The epidermis is the outermost layer of the skin, followed by the dermis, which is the middle layer containing connective tissue, hair follicles, and sweat glands. The hypodermis, also known as the subcutaneous tissue, lies beneath the dermis and consists of fat and connective tissue. Choice A is incorrect as it lists the layers in the reverse order. Choice B is incorrect as it reverses the order of the layers. Choice D is incorrect as there is a correct answer among the choices.

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